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BR-1
BRAKES
C
D E
G H
I
J
K L
M
SECTION BR
A
B
BR
N
O P
CONTENTS
BRAKE SYSTEM
PRECAUTION ................ ...............................3
PRECAUTIONS .............................................. .....3
Precaution for Supplemental Restraint System
(SRS) "AIR BAG" and "SEAT BELT PRE-TEN-
SIONER" ............................................................. ......
3
Precaution for Procedure without Cowl Top Cover ......3
Precaution for Brake System ....................................3
PREPARATION ............................................5
PREPARATION .............................................. .....5
Special Service Tool ........................................... ......5
Commercial Service Tool ..........................................5
SYSTEM DESCRIPTION ..............................6
NOISE, VIBRATION AND HARSHNESS
(NVH) TROUBLESHOOTING ........................ .....
6
NVH Troubleshooting Chart ................................ ......6
BASIC INSPECTION ....................................7
BRAKE PEDAL .............................................. .....7
Inspection ............................................................ ......7
BRAKE FLUID .....................................................8
Inspection ............................................................ ......8
BRAKE MASTER CYLINDER ........................ .....9
Inspection ............................................................ ......9
On Board Inspection .................................................9
BRAKE BOOSTER ............................................10
Inspection ............................................................ ....10
FRONT DISC BRAKE .................................... ....11
BRAKE PAD .......................................................... ....11
BRAKE PAD : Inspection ........................................11
DISC ROTOR ......................................................... ....11
DISC ROTOR : Inspection ......................................11
REAR DISC BRAKE .........................................12
BRAKE PAD .......................................................... ....12
BRAKE PAD : Inspection .........................................12
DISC ROTOR ......................................................... ....12
DISC ROTOR : Inspection .......................................12
PERIODIC MAINTENANCE ........................13
BRAKE PEDAL ................................ .................13
Inspection and Adjustment .................................. ....13
BRAKE FLUID ................................. .................14
Drain and Refill .................................................... ....14
Bleeding Brake System ...........................................14
FRONT DISC BRAKE .......................................16
Brake Burnishing ................................................. ....16
REAR DISC BRAKE .........................................17
Brake Burnishing ................................................. ....17
REMOVAL AND INSTALLATION ...............18
BRAKE PEDAL ................................ .................18
Exploded View ..................................................... ....18
Removal and Installation .........................................18
BRAKE PIPING ................................ .................20
FRONT ................................................................... ....20
FRONT : Exploded View .........................................20
FRONT : Hydraulic Piping .......................................21
FRONT : Removal and Installation ..........................21
REAR ..................................................................... ....23
REAR : Exploded View ............................................23
REAR : Hydraulic Piping ..........................................24
REAR : Removal and Installation ............................24
BRAKE MASTER CYLINDER ..........................26
Exploded View .........................................................26
Removal and Installation .........................................26
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BR-2
BRAKE BOOSTER ............................................28
Exploded View ..................................................... ...28
Removal and Installation - QR25DE .......................28
Removal and Installation - VQ35DE .................... ...29
VACUUM LINES ................................................31
Exploded View ..................................................... ...31
Removal and Installation ........................................32
Inspection After Removal .......................................33
FRONT DISC BRAKE ..................................... ...34
BRAKE PAD .......................................................... ...34
BRAKE PAD : Exploded View ................................34
BRAKE PAD : Removal and Installation .................34
BRAKE CALIPER ASSEMBLY ............................. ...35
BRAKE CALIPER ASSEMBLY : Exploded View ....36
BRAKE CALIPER ASSEMBLY : Removal and In-
stallation .............................................................. ...
36
REAR DISC BRAKE ..........................................38
BRAKE PAD .......................................................... ...38
BRAKE PAD : Exploded View ................................38
BRAKE PAD : Removal and Installation .................38
BRAKE CALIPER ASSEMBLY ............................. ...39
BRAKE CALIPER ASSEMBLY : Exploded View ....39
BRAKE CALIPER ASSEMBLY : Removal and In-
stallation .............................................................. ...
40
UNIT DISASSEMBLY AND ASSEMBLY ...42
FRONT DISC BRAKE .......................................42
BRAKE CALIPER ASSEMBLY ................................42
BRAKE CALIPER ASSEMBLY : Exploded View . ...42
BRAKE CALIPER ASSEMBLY : Disassembly ........42
BRAKE CALIPER ASSEMBLY : Inspection After
Disassembly ......................................................... ...
43
BRAKE CALIPER ASSEMBLY : Assembly ............43
REAR DISC BRAKE ....................................... ...45
BRAKE CALIPER ASSEMBLY ................................45
BRAKE CALIPER ASSEMBLY : Exploded View . ...45
BRAKE CALIPER ASSEMBLY : Disassembly ........45
BRAKE CALIPER ASSEMBLY : Inspection After
Disassembly ......................................................... ...
46
BRAKE CALIPER ASSEMBLY : Assembly ............46
SERVICE DATA A ND SPECIFICATIONS
(SDS) ............... ...........................................
48
SERVICE DATA AND SPECIFICATIONS
(SDS) .............................................................. ...
48
General Specifications ......................................... ...48
Brake Pedal ............................................................48
Check Valve ............................................................49
Brake Booster .........................................................49
Front Disc Brake .....................................................49
Rear Disc Brake ......................................................49
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PRECAUTIONSBR-3
< PRECAUTION >
C
D E
G H
I
J
K L
M A
B
BR
N
O P
PRECAUTION
PRECAUTIONS
Precaution for Supplemental Restraint System (SRS) "AIR BAG" and "SEAT BELT
PRE-TENSIONER"
INFOID:0000000009951709
The Supplemental Restraint System such as “A IR BAG” and “SEAT BELT PRE-TENSIONER”, used along
with a front seat belt, helps to reduce the risk or severi ty of injury to the driver and front passenger for certain
types of collision. Information necessary to service t he system safely is included in the SR and SB section of
this Service Manual.
WARNING:
• To avoid rendering the SRS inoper ative, which could increase the risk of personal injury or death in
the event of a collision which would result in air bag inflation, all maintenance must be performed by
an authorized NISSAN/INFINITI dealer.
• Improper maintenance, including in correct removal and installation of the SRS, can lead to personal
injury caused by unintentional act ivation of the system. For removal of Spiral Cable and Air Bag
Module, see the SR section.
• Do not use electrical test equipm ent on any circuit related to the SRS unless instructed to in this
Service Manual. SRS wiring harnesses can be identi fied by yellow and/or orange harnesses or har-
ness connectors.
PRECAUTIONS WHEN USING POWER TOOLS (AIR OR ELECTRIC) AND HAMMERS
WARNING:
• When working near the Airbag Diagnosis Sensor Un it or other Airbag System sensors with the Igni-
tion ON or engine running, DO NOT use air or el ectric power tools or strike near the sensor(s) with a
hammer. Heavy vibration could activate the sensor( s) and deploy the air bag(s), possibly causing
serious injury.
• When using air or electric power tools or hammers , always switch the Ignition OFF, disconnect the
battery and wait at least three mi nutes before performing any service.
Precaution for Procedure without Cowl Top CoverINFOID:0000000009463677
When performing the procedure after removing cowl top cover, cover
the lower end of windshield with urethane, etc.
Precaution for Brake SystemINFOID:0000000009463678
WARNING:
Clean any dust from the front brake and rear brake wi th a vacuum dust collector. Never blow with com-
pressed air.
CAUTION:
• Brake fluid use. Refer to MA-11, "FOR USA AND CANADA : Fluids and Lubricants"
.
• Do not reuse drained brake fluid.
• Do not spill or splash brake fluid on painted su rfaces. Brake fluid may seriously damage paint. Wipe
it off immediately and wash with wa ter if it gets on a painted surface.
• Always clean with new brake fluid when cleaning th e master cylinder, brake caliper and other com-
ponents.
• Do not use mineral oils such as gasoline or light oil to clean. They may damage rubber parts and
cause improper operation.
• Always loosen the brake tube flar e nut with a flare nut wrench.
PIIB3706J
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BR-4
< PRECAUTION >
PRECAUTIONS
• Tighten the brake tube flare nut to the specified torque with
crowfoot (A) and torque wrench (B).
• Always confirm the specified ti ghtening torque when install-
ing the brake pipes.
• Turn the ignition switch OFF and disconnect the ABS actuator
and electric unit (control unit) connector or the battery nega-
tive terminal before performing the work.
• Check that no brake fluid leakage is present after replacing the parts.
• Burnish the brake contact surf aces after refinishing or replac-
ing rotors, after replacing pads, or if a soft pedal occurs at
very low mileage.
- Front brake: refer to BR-16, "Brake Burnishing"
.
- Rear brake: refer to BR-17, "Brake Burnishing"
.
JPFIA0001ZZ
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PREPARATIONBR-5
< PREPARATION >
C
D E
G H
I
J
K L
M A
B
BR
N
O P
PREPARATION
PREPARATION
Special Service ToolINFOID:0000000009463679
The actual shape of the tools may di ffer from those illustrated here.
Commercial Service ToolINFOID:0000000009463680
Tool number
(TechMate No.)
Tool name Description
—
(J-46532)
Brake height tool Measuring brake pedal height
38-PFM92
(—)
Pro-Cut 9.2 Lathe Refinishing rotors
LFIA0227E
ALFIA0092ZZ
Tool name
Description
1. Flare nut crowfoot
2. Torque wrench Removing and installing brake piping
a: 10mm (0.39 in)/12mm (0.47 in)
Power tool Loosening nuts, screws and bolts
NT360
PIIB1407E
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BR-6
< SYSTEM DESCRIPTION >
NOISE, VIBRATION AND HARSHNESS (NVH) TROUBLESHOOTING
SYSTEM DESCRIPTION
NOISE, VIBRATION AND HARSHNESS (NVH) TROUBLESHOOTING
NVH Troubleshooting ChartINFOID:0000000009463681
Use the chart below to help you find the cause of the sy mptom. If necessary, repair or replace these parts.
×: ApplicableReference page
BR-11, "BRAKE PAD : Inspection"
,
BR-12
BR-11
, BR-12
BR-11
, BR-12—
—
BR-11, "DISC ROTOR : Inspection", BR-12, "DISC ROTOR : Inspection"—
—
—
BR-11, "DISC ROTOR : Inspection", BR-12, "DISC ROTOR : Inspection"
PB-6, "Inspection"
FAX-5, "NVH Troubleshooting Chart"
, RAX-4, "NVH Troubleshooting Chart"
FSU-6, "NVH Troubleshooting Chart"
,RSU-4, "NVH Troubleshooting Chart"
FAX-5, "NVH Troubleshooting Chart"
(front axle), RAX-4, "NVH Troubleshooting Chart"
(rear axle)
WT-52, "NVH Troubleshooting Chart"
WT-52, "NVH Troubleshooting Chart"FAX-5, "NVH Troubleshooting Chart"ST-29, "NVH Troubleshooting Chart"
Possible cause and
SUSPECTED PARTS
Pads - damaged
Pads - uneven wear
Shims damaged
Rotor imbalance
Rotor damage
Rotor runout
Rotor deformation
Rotor deflection
Rotor rust
Rotor thickness variation
Drum out of round
WHEEL HUB
SUSPENSION
AXLE
TIRES
ROAD WHEEL
DRIVE SHAFT
STEERING
Symptom Noise
××× ××× ×××
××
Shake × ×× ×××
××
Shimmy, Shudder ×××××××× × ××× ×
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BRAKE PEDALBR-7
< BASIC INSPECTION >
C
D E
G H
I
J
K L
M A
B
BR
N
O P
BASIC INSPECTION
BRAKE PEDAL
InspectionINFOID:0000000009463682
1. Inspect the brake pedal height (H) from the floor using Tool at a 90° angle to the floor.
2. Adjust the brake pedal height to specifications. Refer to BR-13,
"Inspection and Adjustment".
Brake Pedal Specifications
Tool number : — (J-46532)
AWFIA0913ZZ
Brake pedal height (H) (from dash lower panel top surface) Refer to BR-48, "Brake Pedal".
Brake pedal full stroke (S) Refer to BR-48, "Brake Pedal"
.
Clearance between stopper bracket (C
1) and threaded end of the stop lamp
switch and ASCD cancel switch (C
2) Refer to
BR-48, "Brake Pedal".
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BR-8
< BASIC INSPECTION >
BRAKE FLUID
BRAKE FLUID
InspectionINFOID:0000000009463683
BRAKE FLUID LEVEL
• Make sure that the brake fluid level in the reservoir tank is betweenthe MAX and MIN lines.
• Visually check around the reservoir tank for brake fluid leakage.
• If the brake fluid level is excessively low, check the brake system for leakage.
• If brake warning lamp remains illuminated after parking brake pedal is released, check the brake system for brake fluid leakage.
BRAKE LINE
1. Check brake line (tubes and hoses) for cracks, deterioration or other damage. Replace any damaged
parts.
2. Check for brake fluid leakage by depressing brake pedal under a force of 785 N (80 kg-f, 177 lb-f) for approximately 5 seconds
while engine is running.
CAUTION:
If brake fluid leakage occurs around joints, retighten or
replace damaged parts as necessary.
ALFIA0273ZZ
SBR389C
Revision: November 20132014 Altima NAM